Attachment for sewing machines



April s, 1924. 1,489,263

` A. B. MATTINGLY l ATTACHMENT FOR SEWING MACHINES Cigin'al Fed Jan. 20.1916 '4 Sheets-Sheet 1 K Il V April s 1924. 1,489,263

' A. B. MATTINGLY ATTACHMENT FOR SEWING MACHINES Original Filed Jan. 20,1916 4 SheetS--Shee'l'l 2y 4 T IQUX- x-: 2 20'/ ffl@ C@ A k am@ i j# M2.55 y liguri Wzf' ibi@ April s, 1924. 1,489,263

l A. B. MATTINGLY ATTACHMENT FOR lSEWING MACHINES original le'd Jan.'2o. 191e 4 sheets-sheet s Aprilfs,1924.A 1,489,263 A. B. MATTINGLY IATTACHMENT FOR SEWING MACHINES OriginalV Filed Jan. 20, 1916 4Sheets-Sheet 4 Patented Apr.. t, i924,

B. MATTNGLYOF NEW YORK, N'. Y.

ATTAI-IMENT FOR SEWING MACHINES.

Substitute for application Serial No. 73,165, filed January 20, 1916.

This application tiled!Y March Il, 1820.

Serial No. 363,2()0.

To all y207mm t may concern:

Be it known Vthat Annnirrus B. li/.lAT- riNcLY, citizen of the UnitedStates, and resident of New York, in the county of New York and State ofNew York, have invented certain new and useful Improvements in,Attachments for Sewing Machines, of which the following is aspecification.

This invention relates to an improvement in attachments for sewingmachines, and the inventor is aware that the device is of a. naturesimilar to that disclosed in lritish Letters Patent No. 1.7,l53 of i905,to Hills, and United States Patents No. 412,08i, to Fletcher, No.446,736. to Fletcher, No. Qllllailli, to Seward, and No. 990,610, toTurck, and the object is to overcome some of the objectionable fcatin'esof these devices and to further improve the saine.

This application is a substitute for application Serial Number 73,165,filed January 20, 1916.

The principal objects are to provide a device of this character toautomaticallyr cut or slit the cloth just in advance of the stitching orbinding` of the button-hole so that the needle may pass alternatelj7through the cloth and then through the slit or cut, thus causing thethread to be brought through the cut and make a perfect binding of theraw edges of the work, and to provide a means for positively actuatingthe knife with a quick and, decisive action at the proper periods tomake the cut the proper length according to the length of thebutton-holes, and to have the length of cut automatically adjustitself'with the adjusting of the device for the length of thebutton-hole.

The further objects are to provide a de vice of this character whichwill provide a means for supplying more stitches around the loop of thebutton-hole, or in other words to more evenly distribute the stitchesaround the contour of the button-hole ythan has heretofore beenaccomplished, and to provide a means whereby a more perfect adjustmentof the cutting device as regards its alinement relative to the needle ofthe sewinggj machine is obtained.

The further objects are to provide a device of this character which byits construction is considerably reduced in height and thereby doingaway with the necessity of removing the face plate of the sewing machineto adjust the presser bar, and by the construction of the base plateobviating the necessity of removing the feed dogs of the sewing machine.

The still further objects are to provide an improved ratchet device foreffecting the lateral vibration of the work clamp. to produce theover-stitch of the edge of the button-hole, and to form other parts ofthe device by the stamping process, screw machines, which is thecheapest method of manufacturing devices of this class.

A still. further object is to provide a device of this kind in which theknife can be adjusted to cut a line or slit in which the needle willfollow with its inside lines of its vibrating motion on its forwardmovement and also perform the same function on its backward movement informing' or stitching the button-holelWith these and other objects inview, it will be seen that lf accomplish the foregoing, by referring tothe accompanying drawings, forming a part ot this specification; but Ido not wish to confine myself to the exact construction shown, as Ihave, for the sake of clear illustration, exaggerated some of the parts,especially in the side elevations, and the cani faces of the yoke uponwhich the eccentric cam works.

ln the accompanying drawings, showing one embodiment of my invention,Figure l is a plan view of the device; Fig. 2 is a side elevation; Fig.3 is a horizontal section taken on the line 3 3 of Fig. 2, and showingdiagrammatically the operating cam friction drive or eccentric in dottedlines; Fig. l is a similar view to Fig. 3, showing more clearly theoperating means for the knife; Fig. 5 is a similar view to Fig. 4, withthe knife and its operating means removed; Fig. 6 is a similar View toFig. 5, with the work clamp and knife guide and also the retainingwasher removed, and showing the vibrating mechanism; Fig. 7 isa similarview to Fig. 6, showing a part of the vibrating mechanism removed andshowing the pawl plate and the adjusting means for the knife, and. theadjusting ineaaes its upper end terms a pivott'or the vibrator 46, whichis connected thereto by the hole 'i7 in the ear 48. and when assembledthe ear a8 is capable ot passing' under the pawl plate lfd', 'while theyoke Zt9 straddles the ratchet cam 25 and rests upon the pawl plate 13.

rlhe vibrator Ll-G is provided with a pivoted block 50 which fits theinner faces oit the rear yoke 52 ot the work clamp which straddles thestud and rests on the retain-- ina washer 21. which, working] inconjunction with the cam member 24;.l keeps thc forward part ot the workclamp in proper Contact with the plate i and prevents the bottomstripper plate 55 'from leaving` the slotted way 56 in the base as it isoscillated by the work clamp in connection with the ears 57.

Mounted upon the yoke 52 is the guide or shield 58 for the knife Carrier597 having its front end 60 in the 'form ot a stripping plate .whichslides in a lgroove or space 61 formed by a plate G2. which is forcedintoA the upper jaw 63 of the work clamp. The rear end oit the shield 58is enlargedq 'tormin?,- a guide 611-, by means ot the downwardlyextendingflanges 65 fitting' the yoke 52N which moves back and forthrelatively to the stud l5. The rectangular opening (36 is ot a widthequal to the diameter ot ile upper end olf the stud lo, which acts as apivot for the work clamp and passes through the openingr 66 and preventsthe shield 'from moving back and forth but allows its rear end to bedrawn laterally of the stud in both directions by the pin 67 working;-in the cam groove 68 formed by the cams` 69 and '70 on the underside otthe cam member 2d, (thus causing the vibrator to vibrate or oscillatethe work clamp in the shape oli button-hole while the eccentric ismoving the work clamp back and iiorth the length ot the button-hole.) y

lilounted upon the ruido or shield 64 is the knife carrier 59. which hasits spring portion Tipassing through the openings 72 and 75% ot theshield 58. The spring portion 7l has its outer end bent upward, with twoears 71.2 termino' a pair of jaws for the knife Z5 which is held by apin or screw 76. llhe rear end of the spring portion 7i is formed in arectangular trame or yoke '77 having a flange 78 forming a cam-enga@-ing Atare 200 against which the cam 7 9 fixed on the under 'face of earnmember 2a works. and the flexible portion 8O insures the keepin g ot thecam 79 and the cam-engaging tace 200 always in contact. At apredetermined point the flange 7 8 forming; the camengaging' tace 209 iscut away or ends at 201, and the yoke is so formed at this point as tohave a clearance space 202 to prevent the yoke trame 'from hitting* thecam 79 when the flexible part 8O of the yoke causes the yoke and knifeto move quickly back between the strokes of the needle and thus preventthe needle bar from striking the knife several. times while it is beingmoved back from under the needle bar. This quick moveu'ient is caused bythe cam T97 which holds the yoke forward for .the proper time, having anabrupt tace 203, so that while it revolving` on the stud the point 204passes the point 201 on the c.am-engfagginpr face 200. The `lace 203 isso 'formed as to not interl'ere with the camengaging` face 200 and thisallows the yoke to move back its full stroke at this point. which isaccomplished on the upward stroke of the needle bar.

The work clamp is provided with an eeccntrie yoke or member 81 having anelongated openingv 82 in which works the adjustable eccentric cam 30against the faces 83 and 8e. it will be noted that l have shown theelongated opening 82 converging .in the direction of the center line andthe forward part ot the attachment. (The revolving' of the cam 8O aroundthe stud causes the work clamp to be moved back and vforth relatively tothe needle.) The member 8l is secured to the work clamp 53 by means oiscrews 85. and the forward end biiurcated and bent so as to formbearings for the locking member 86, which is formed of a bent wirehavingy a central portion 87 which acts in the capacity of a hand .leverto operate the two end portions which act upon the spring extensions 89(of the upper jaw 68) and which are riv eted to the rear yoke 52 of thework clamp.

Mounted on the underside of the base plate 1 (see Fig. 7) isa springmember 909 which is held in position by the rivet-s 91 and has anupwardly extending portion 92 which extends through the opening 93 ofthe pawl plate 13 and into the holes 94 of the ratchet cam rl`hisprevents the ratchet cam from being turned backwards by friction oi thepawl 95 slipping out of any one oi the holes 94e upon its backwardmovement after has revolved the ratchet cam one tenth of a turn.

The cam member 24 together with the eccentric disk 28 is revolved by afriction device 96 consisting' of a ring- 97 located on the cam member24'. and supported by a flange at the bottom of the said member. and inturn carrying a friction dog 98, which turns on a pivot 100 and is heldin its biting position against the surface of the cam member 2li by aspringr 99. rlhe operation oi the triction device will be describedlater on.

The base plate is further bent or formed so as to have a raised portion102 through the center thereof, upon which the bottom ot the wom clampslides and on which is eut the channel or groove 56 for the stripperplate 55, which has an opening 103 somewhat in the shape of a l, Beneaththe stripper plate 55 in the bese plate is an opening 101i to allow theneedle to perform its functions. The raised portion 102 forms n channelor groove 105, (see Fig. 8), which allows the :tree action of the feeddogs of the sewing rnachine and raises the device enough to permit thecutting; of the cloth without the lrnite hitting the dogs on itsdownward stroke.

rlhe operation of the device is ver;Y sirnple. The rear throat plate oitthe sewing machine is removed and the device is slipped in its place lovthe insertion of the throat plate 2 which is screwed to the devise, theshank ot the screw which holds the needle in position posses into thehifurcated end 6 oi the lever 4. W hen the attachment is tiret put onthe machine the screw ed and lock nut Ll0 ere loosened and the screw 39turned to bring the knife in line with the needle. rlhe lock nut l0 isthen tightened up. This holds trie slot 85 in a perfect line with theneedle and then the member 42' can he adjusted (for any width otvibration for t Le work clamp). rlhe screw l-l is then tightened and theattachment is ready tor operation. lt will he understood that zitter theknife has been once adjusted for the needle the attachment can heremoved it desired and put heck without the knife losing reedjusted, andthe vibrating movement ot the work clamp een also he changed to takemore or less bite when the attachment is adjusted to make a larger orsmaller button-hole, without disturbing the adjustment of the knife.

'llo malte e button-hole the worlr clamp is set by moving' the sewinfrmachine until the extreme heck position is reeched. rlhe lever 87 ot thelocking; rneinher 86 is then pressed forward. (that is in the directionot the needle) end iorces the ends 88 hackw wards and thus relieves thepressure of the springsl 89,. which allows the jews of the worlr clampto open. rlhe cloth is inserted between the jaws and the lever 87 pushedhack to its original positioin thus causing the upper jaw to :torce thecloth down into the concave opening in the lower jew, and at the semetime the 2110i the upper jaw `prevent the slipping;` the cloth on thelower jew and thus causes the cloth to he stretched like a druni head.llilith the work clamp in this position the knife is in the dottedposition shown in ll1 ig. 25 and upon running` the machine the needlehar strikes the top oipv the lnite anc Yforces it through the cloth eachtirne the needle descends, until the work clamp is almost at its eXtremetorward position, when the earn "l is at the point where the point ornose 20st passes the point 201 and the tienihle portion. 80 et the voltecauses the yoke to rnove lessees swiftly haelt and drew the imite out oiline with the needle ser betere it hes time to de ilre it (as shown intull lines in 'l preventing turther cutting`r l in this position l isfinished. The st ter upon which i g hv the vibrau'giwerd nioven ent ofthe raiser, which in suiificiently oit the holes it one varises one otone side Y. rater to rlhe tace .i :ne vibrator. Y e one of the oppositeside oi?. the vol nd swing in the opposite directie .s movement oi thevibrator causes the work elaine to he oscilleted on the l motiontrensrnitted Aough bloc-lr ot the vibrator. ,f'ilhile the vibrator isoscillating the work cleinp in one d ection or the other With everystrolre ot A,he needle to nielre the nee die nass first through thecloth and then through the cut7 the eccentric cain is slovvlj7 sho j thework clamp f'orward the length of the buttar-'hole.y the ot the Jorwardinovenient beingregulated by the screw 8. which strikes the 1n' or lever98 oi" tre friction clutch and trees the ring' 97 heck :i predeterminedamounty (upon the downn ie-rd stroke et the needle). rlhe rear end l0oit the slot lS upon reachinjy the 98 (on the upward movement or" tleneedle)7 forces the ring to move forward and the nose i713 of the erin98 to hite into the cam )member 2e; and cause it and the revolving diskto revolve7 whic causes the ea n 30 to ect upon the race oli the yokernernher 8l and shove the work clamp forward7 and when the on last neitot the revolution ot the revolving dish 28, works against the it'ece 83it causes the worlr clamp to he drawn bsciruf'erds. l; will he notedthat the feces 84 ere inclined relatively to the center line of the workclamp. rlhis causes the earn which maires one cornplete revolution eachtiine a huttonhole is mede, and t0 cause the worlr clamp to' moveforward tester on the lirst quarter and slower on the ond quarter or"its revela-- tien, and in niov ig hach the worlr clamp the third quartero1- the revolution is at Vthe seine sneed as thc second, and the fourthquarter is the saine speed as the first. rlhis causes less stitches tohe put in the First and last 7oerts rnade of the button-hole end morestitches around the loop forming the eyelet which joert is mede duringthe second up l , the lever" l to act on the je :ha L

its

and third quarters et the revolution ot the cam 30, and thus entrastitches are placed where they are needed, and this givesa more evenappearance to the stitches of the button-hole. The revolving of the cammember 2d causes the pin GT to shi-it the rear end of the work clamprelatively to the ear 48 and the stud l5. @n the first part et therevolution ott the cam member 2d the pivot pin 67 is in that position oithe cam groove G8 designated by the numeral 108, which causes. the lirststraight part of the lmtton-hole to be made. ri`he parts 109 and Ill()cause the pin 67 to `tirst move further away from the stud and thencloser to the stud than it was at the start. (This Causes the eyelet ofthe button-hole to be made), and the part lll (causes the pin to stan/.lstill until the last straight part or the button-hole is finished), andthe movement et the pin caused by the part 1.12 causes the tivo straightsides olfA the button-hole to be stitched together.

ln order to make a large button-hole, the

. eccentric cam is located out at the periphery oi the disk 28, and thenearer the center of the disk 28 the cam 30 is located the smaller willbe the button-hole; but no matter what the length ci the button-hole isthe knife will always move from under the needle bar at the same periodot the opera tion of making the button-hole and will be pushed under theneedle bar at the starting point, so that the slot will always be theproper length. `When a large button-hole is made its overstitch shouldbe ot greater length than tor a small one, so that by loos ening thescrew Llei and drawing the member Li2 back it causes the block 50 ot thevibrator to be moved nearer' to the stud l5 upon which the work clamposcillat( and causes a longer throw of the work clamp, or by moving the.member lf2 forward the throw of the work clamp is decreased.

Certain parts ci' the present mechanism are not claimed therein, but areclaimed in application Seria-l Nos. 353,107 g 353 1,08; 336,256;218,076; 352,980; essere; and 346,236.

l claim as my invention: e

l. The combination with the trame and the work clamp mounted to recipro.@te thereon and to vibrate laterally, oit sind, a ratchet cam mounted onthe stud, 'f i advancing the ratchet cani step work clamp having avibrating ,f necting it to the ratchet cani, means in, the form of aif-shaped slot for inv-rinsing the speed of the forward and baci.;movement or the work clamp on 'the iirst and iourth quarters anddecreasing the speed on the second and third quarters of the cycle tocause more stitches to be put in one end of the button hole than in. theother end of the buttonhole, a cutting device carried by the work clampand movable thereon, and means for moving the cutting device in bothdirections.

2. The combination with the frame and the work clamp mounted toreciprocate thereon and to vibrate laterally, or a stud, a ratchet cammounted on the stud, a pawl plate for advancing the ratchet cam step bystep, the work clamp having a vibrating, means connecting it to theratchet cam, means in the orm of a il-shaped slot Vfor increasing thespeed of the forward and back movement of the work clamp on the irst andfourth quarters anddeoreasing lthe speed on the second and thirdquarters of the cycle, to cause more stitches to be put in one end ofthe button hole than in the other end oi the buttonhole, a cuttingdevice carried by the work clamp and movable thereon, and means formoving the cutting device in both directions, with a quick and decisivemovement.

8. rlhe combination with the frame and the work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a ratchet cammounted on the stud, a pawl plate for advancing the ratchet cam step bystep, the work clamp having a vibrating means connecting it to theratchet cam, means for preventing any backward throw of the ratchet cam,means in the form of a lil-shaped slot for increasing the speed of theforward and back movementof the work clamp on the tirst and fourthquarters and decreasing the speed on the second and third quarters ofthe cycle to cause more stitches to be put in one end of the button holethan in the other end of the buttonhole, a cutting device carried by theworkclamp and mov able thereon, and means for moving. the cutting devicein both directions with a quick and decisive movement.

1l. The combination with the frame and the work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a ratchet cammounted on the stud, a pawl plate for advancing the ratchet cam step bystep, the work clamp having a vibrating means connecting it to theratchet cam, means for shifting at certain periods the work clamprelative to its pivot to -form a buttonhole with a loop to maire aneyelet end, means in the form of a il-shaped slot for increasing thespeed of the forward and back movement of the work clamp on the firstand fourth quarters and decreasing the speed on the second and thirdquarters of the cycle to cause more stitches to be put in one end oi thebutton hole than in the other end of the buttonhole, a cutting devicecarried by the work clamp and movable there on, and means :tor movingthe cutting device in both directions with a quick and decisivemovement.

5. The combination withfthe frame and the Work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a ratchet cammounted on the stud, a paWl plate for advancing the ratchet cam Step bystep, the work clamp having a vibrating means connecting it to theratchet cam, means for preventing any backward throw of the ratchet cam,means for shift- V ing at certain periods the Work clamp relative to itspivot to form a button-hole with a loop to maire an eyelet end, means inthe form of a tl-shaped slot for increasing the speed of the forward andback movement of the Work clamp on the first and fourth quar` ters anddecreasing the speed on the second and third quarters of the cycle tocause more stitches to be put in one end of the button hole than in theother end of the buttonhole, a cutting device carried by the work clampand movable thereon, and means for moving the cutting` device in bothdirections With a quick and decisive movement.

6. The combination with the frame and the work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, ratchet cammounted on the stud, a pawl )late for advancingr the ratchet cam step ystep, the work clamp having a vibrating means connecting it to theratchet cam, means for shifting at certain periods the Work clamprelative to its pivot to form a button-hole with a loop to make aneyelet end, means for increasing or decreasing the overstitch or thelateral throw of the work clamp, means in the form of a V shaped slotfor increasing the speed of the forward and back movement of the workclamp on the first and fourth quarters and decreasing the speed on thesecond and third quarters of the cycle to cause more stitches to be putin one end of the button hole than in the other end of the button hole,a cutting device carried by the work clamp and movable thereon, andmeans for moving the cutting device in both directions.

7. The combination with the frame and the worlr clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a ratchet cammounted .on the stud, a pawl plate for advancing the ratchet cam step bystep, he work clamp having a vibrating means connecting it to theratchet cam, means for preventing any backward throw of the ratchet cam,means for shifting at certain periods tie work clamp relative to itspivot to form a button-hole with a loep to make an eyelet end, means forincreasing or decreasing the overstitch or the lateral throw of the workclamp, means in the form of a V-shaped slot for increasing the speed ofthe forward and back movement of the work clamp on the :first and fourthquarters and decreasing the speed on the second and third quarters ofthe cycle, to cause more stitches to be put in one end of the buttonhole than in the other end of the button hole, a cutting device carriedby the work clamp and movable thereon, and means for moving the cuttingdevice in both directions.

The combination with the frame and the work clamp mounted to reciprocatethereon and to vibrate laterally, of a stud, ratchet cam mounted on thestud, a pawl plate for advancing the ratchet cam step by step, the Worlrclamp having a vibrating means connecting it to the ratchet cam7 meansfor shifting at certain periods the work clamp relative to its pivot toform a button-hole with a loop to make an eyelet end, means forincreasing or decreasing the overstitch or the lateral throw of the workclamp, means in the form of a shaped slot for increasing the speed ofthe forward and bark movement of the work clamp on the rst and fourthquarters and decreasing the speed on the second and third quarters ofthe cycle to cause more stitches to he put in one end of the button holethan in the other end of the button-hole, means for adjusting thevibrator mea-ns relatively to the stud and needle, a cutting devicecarried by the work clampand movable thereon, and means for moving thecutting device in both directions.

9. The combination with the frame and the work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a ratchet cammounted on the stud, a pawl plate for advancing the ratchet cam step bystep, the Work clamp havin@ a vibrating means connecting it to theratchet cam, means for preventing any baclrvard throw of the ratchetcani, means for shifting at certain periods the worlr clamp relative toits pivot to form a button-hole with a loop to make an eyelet end, meansfor increasing or decreasing the overstitch Aor the lateral throw of thework clamp, means in the form of a if shaped slot increasing the speedof the forward and baci; movement of the work clamp on the iirst andfourth quarters and decreasing the speed on the second and thirdquarters of the cycle to canse more stitches to be put in one end of thebutton hole than in the other end of the button hole, means foradjusting the vibrator means relatively to the the stnd and needle, acutting device carried by the worlr clamp and morali thereon7 and mea-nsfor moving the cutting device in both directions.

l0. The combination with the frame and the work clamp mounted treciprocate thereon and to vibrate laterally, of a stud, a ratchet cammoimted on the stud, means for advancing the ratchet cam step by step,ie work clamp having a vibrating means connecting` it to the ratchet c:m, means in the form of a l! shaped slot increasing the speed of theforward and bac-lr moveliti lili

:ifi-eases ment ot the Worlz clamp on the first and fourth quarters anddecreasing the speed on the second and third quarters oit the cycle tocause more stitches to be put in one end ot the button hole than in theother end oi. the button hole, a cutting device carried by the Workclamp and movable thereon, and means in the 'form ottavo members actingin conjunction with each other, one a rotatable member mounted on thesaid stud and the other a slidable meniber forming a part ot the cuttingdevice and spring actuated, tor moving the cutting device in bothdirec-tions with a quick and decisive movement.

lll. The coml'iination With the trame and the Work clamp mounted toreciprocate thereon and to vibrate laterally, oli a stud, a ratchet cammounted on the stud, a pawl plate for advancing tl ratchet cani step b vstep, the Work clamp having a \"ibrating means connecting it to theratchet cam, means for adjusting the vibrating means into perfectalinement with the said stud and the needle Without interfering with aljustment of' the vibraiing means relativeljv to the stud, a cuttingdevice carried by the Work clamp and movable thereon, means in the formof a curved slot for causing more stitches to be placed in one end oifthe buttonhole than in the other end ci' the buttonhole, and means inthe 'form oit tivo members acting in conjunction With each other, one arotatable member mounted on the said stud and the other a slidablemember form ing a part of the cutting device and spring actuated, i`ormoving the cutting device in both directions.

l2. rlhe combination With the trame and the Work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a ratchet canimounted on the stud, a paivl plate for aflvancing the ratchet cam stepby step, the n'orlt clamp having a vibrating means connecting it to theratchet cam, means tor preventing any backward thron7 of the ratchetcam, means ior adjusting the vibrating means into perfect alinement withthe said stud and the needle Without interfering ivith adjustment ot thevibrating` means relatively to the stud, a cutting de vice carried bvthe work clamp and movable thereon, means in thc form ot a curved slotttor causing more stitches to be placed in one end oi 'the buttonholethan in the other end ot 'the buttonhole, and in is in vthe Jform oftivo members acting in conju ction with ,ach other. one a rotatablemember mounted on the sai( Mud and the other slidable mber 'to ning partof the cu" des ring actuated tor fe in both directions.

The combination vvith 'the Atrame and ivolt: clamp mounted toreciprocate thereon and to v'brate laterally, o3 stud, a

ratchet cam mounted on the stud, a paw]y plate ior advancing the ratchetcani step bv step, the Work clamp having a vibrating means connecting`it to the ratchet cam, means for shitting at certain periods the VWorkclamp relative to its pivot to form a button-hole with a loop to make aneyelet end, means for adjusting the vibrating means into perfectalinement with the said stud and the needle "Without interfering vvithadjustment of the lvibrating means relatively to the stud, a. cuttingdevice carried b v the ivorlr clamp and movable there on, means in theiorm of a curved slot 'for causii'ig more stitches to be placed in oneend oi the buttonhole than in the other end ett the buttonhole, andmeans in the form of two members acting in conjunction with each other,one a rotatable member mounted on the said stud and the` other a slidaile member forming apart of the cutting device and spring actuated, 1formoving the cutting device in both directions with a quick movement.

le. The combination vwith the trame and the Work clamp mounted toreciprocate thereon and to vibrate late "ally, ot a stud, a ratchet cammounted on the stud, a pawl plate for advancing the ratchet cam step bystep, the ivorlt ciamp having a vibrating means connecting it to theratchet cam, means vor preventing anjT backward throw of the ratchetcam, means for shitting at certain periods the Work clamp relative toits pivot to form a button-hole With a loop to make an eyelet end, meansfor adjusting the vibrating means into per'iect alinement ivith the saidstud and the needle Without interfering with. adjustment of the vibrating means relativeljY to the stud, a cutting device carried by the workclamp and movable thereon, means in the form of a curved slot ttorcausing more stitches to be placed in one end oiI the buttonhole than inthe other end of the buttonhole, and means in the form of tivo membersact-ing in conjunction with each other, one a rotatable member mountedon said stud and the other a. slidable member forming a part of thecutting device and spring actuated, for moving the cutting device inboth directions with quick movement.

i5. The combination with the trame and the Work clamp mounted toreciprocate thereon and to vibrate laterallyv of a stud, a ratchet cammounted on the stud, gawl plate :tor advancing the ratchet cam step bystep, the Work clamp having `a` vibrating means connecting it to theratchet cam, means for shifting certain periods the ivorlr clamprelative to its pivot to term a button-hole with a loop to Jform anevelet end, means for increasing or decreasing the over` stitch or thelateral throw of the Werl: clamp, means for adjurting the vibratingmeans tile nee justment e'. f to the stud, cutting (lui Work clamp andmovable t the ferm of e. Cu'vell elet te? ce1 stitches to be placed inone eetl e tonliele than in the other @nfl et t Y hole, and ineens inthe A i acting in cenj/imlcticn v'* rcteteble meinten am. lie other ethe v.' gli theieon une te v ratchet cam plete fel" edvanci i step, thework clem, meeting it tc` the et venting any backwe. eem, Enea-ns el A lthe work clamp rel form a button-hole eyelet encl, ineens tor il ing`the oveistitell el the wck clamp, e slot en the seid stud and g eclgit,i. slet into em-feet alinezn et 'with the @tud end LJ `l` I Y' aneeclle, the vibrate? pivot beng adjust n said slot relatively te thestud device carried by the vml cle able thc-Teen, and ineens the ternicf tav@ mem ere acting in conjunction with eecli other, one e.notata-ble 3 e abel* mounted the Seid stud and the @their e elifleblemeineer forming apart cit tli. Y device and spring actuated, for nim/lngthe cutting device in beth directions.

l? The combination with the mine enel the WO1-l; clamp mounted toeeiproeete tllefe- 0n and to vibrate leteelly, of: e. Stud, :i cuttingdevice @pene/tively meente@ npei seid Work clamp, e ratchet 'cam mountedo', the Studi) Ineens off edveneing the fetches` cam Step by step, theWok clamp leaving vibrating means connecting it'tc the ratchet cem, andineens in the forni if Slmpecl slet with e curved apex te? inceesing thespeed of the forward :incl beck inevenient et the work clampon tl e etand fouet? quarters and. deceeeing the speed on th Second tliiid(guette/fs of the ejzfcle in order to place incre Stitches elvelet eneof the buttoinhele than in the cthe' enel e the buttonhole.

18. rEhe eoinbinetion with the Vthe Wei-fla clamp mounted to reciprocatetllee Leeeeee s and the speed on the and hier@ que teis the cycle in titLes in the ed let than in the other end tens envl and .M ineens forshifting et ceitain pemefls the Weck clamp relative te its pivot te feme button-hole with e leo-9 te ineke en evelet enel7 and mee-ns 1n thefcin et e V Shaped slet with e curved ep X 'for lncreasing' the speed ofthe tcmvecl and back movement of the Werk clamp on the i'st and fourthquarters and deceesing the speed en the second and third quarters of theeyele in @Ecler 'te place more stitches in tie eyelet end of thebuttenlele than in the other enel ef the liuttonhele.

2. The combination v 'tli the trarne and the Werl( clamp lted t0eciiioeete they-ecn end to vibf etemlly, ct stud.,

cutting' device opemt seid Werk clem-3, a ietcnet cam mounted en liestud, e, pewl deze mi: etchet cani step f t havn quarters and decreasingthe speed on the second and third quarters of the cycle 1n order toplace more stitches in the eyelet end of the buttonhole than in theother end of the buttonhole.

22. The combination with the frame and the Work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a cuttingdevice operatively mounted upon said work clamp, a ratchet cam mountedon the stud, a pawl plate for advancing the ratchet cam step by step,the work clamp having a vibrating means connecting it to the ratchetcam, means for shifting at certain periods the work clamp relative toits pivot to form a button-hole with a loop to make an eyelet end, meansfor increasing or decreasing the overstitch or the lateral throw of thework clamp, and means in the form of a il shaped slot with a curved apexfor increasing the speed ol the forward and back movement oi' the workclamp on the first and fourth quarters and decreasing the speed 0n thesecond and third quarters of the cycle in 'e order to place morestitches in the eyelet end of the buttonhole than in the other end ot'the buttonhole.

23. The combination with the frame and the work clam mounted toreciprocate thereon and to vibrate laterally, of a stud, a cuttingdevice operatively mounted upon said work clamp, a ratchet cam mountedon the stud, a pawl plate for advancing the ratchet cam step by step,the work cla-mp having a vibrating means connecting it t0 the ratchetcam, means for preventing any backward throw of the ratchet cam, meansfor shifting at certain periods the work clamp relative to its pivot toform a button-hole with a loop to make an eyelet end, means forincreasing or decreasing the overstitch or the lateral throw of the workclamp, and means in the form of a V shaped slot with a curved apex forincreasing the speed of the forward and back movement of the work Vclampon the iirst and fourth quarters and decreasing the speed on the secondand third quarters of the cycle in order to place more stitches in theeyelet end of the buttonhole than in the other end of the buttonhole.

24. The combination with the frame and the work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a cuttingdevice operatively mounted upon said work clamp, a ratchet cam mountedon the stud, a pawl plate for advancing the ratchet cam step by step,the work clamp having a vibrating means connecting it to the ratchetcam, means for shifting at certain periods the work clamp relative toits pivot to :form a button-hole with a loop to make an eyelet end,means for increasing or decreasing the overstitch orthe lateral throw ofthe work clamp, means in the form or" a V shaped slot with a curved apexfor increasing the speed of the forwardand back movement of the workclamp on th'e' lirst and fourth quarters and decreasing the speed on thesecond and third quarters of the cycle in order to place more stitchesin the eyelet end of the -buttonhole than in the other end of thebuttonhole, and

means for adjusting the vibrator means relatively tothe stud andneedle.

25. The combination with the frame and said work clamp, a ratchet cammounted on the stud, a pawl plate for advancing the ratchet cam step bystep, the work clamp havinga vibrating means connecting it to theratchet cam, means for preventing any backward throw or' the ratchetcam, means for shifting at certain periods the work clamp relative toits pivot to form a button-hole with a loop to make an eyelet end, meansfor increasing or decreasing the overstitch or the lateral throw of thework clamp, means in the form of a V shaped slot with a curved apex forincreasing the speed of the forward and back movement of the work clampon the lirst and fourth quarters and decreasing the speed on the secondand third quarters of the cycle in order to place more stitches in theeyelet end of the buttonhole than in the other end of the buttonhole,and means for adjusting the vibrator means relatively to the stud andneedle.

26. rlhe combination with the frame and the work clamp mounted toreciprocate thereon and to vibrate laterally, of a stud, a cuttingdevice operatively mounted upon said work clamp, a ratchet cam mountedon the stud, a pawl plate for advancing the ratchet cam step by step,the work clamp having a vibrating means connecting it to the ratchetcam, means for placing morestitches in one end of the button hole thanin the other end of the button hole, and means for adjusting thevibrating means into perfect alinement with the said stud and the needlewithout interfering with adjustment of the vibrating means' relativelyto the stud.

27. The combination with the frame and the work clamp `mounted toreciprocate thereon and to vibrate laterally, of a stud, a cuttingdevice operatively mounted upon said work cla-mp, a ratchet cam mountedon the stud, a pawl plate for advancing the ratchet cam step by step,the work clamp having a vibrator connecting it to the ratchet cam, meansfor shifting at certain periods the work clamp relative to its pivot soas to form a button-hole, a slotted member pivoted on the said stud, andmeans for adjusting its slot into perfect alinement with the stud andneedle, the vibrator pivot being adjustable in said slot relatively tothe stud for increasing or decreasing the overstitch or the lateralthrow of the work clamp.

28. In an attachment of the character stated, the combination ofstitching mechanism, a reciprocal work clamp for advancing work to thestitching` mechanism, a cutter carried by the work clamp and operablefor work incision in advance of the stitching operation and mechanismfor shifting said clamp at predetefmined periods to form a button-holewith a. loop to make an eyelet end, said mechanism provided with meansin the form of a V-shaped slot with a curved apex for placing morestitches in one end of the button hole than in the other end of thebutton hole.

29. A mechanism as specified in claim 28 in combination with means forso oscillating the work clampy as to cause the stitching mechanism topass a thread first through the work as incised and then through theVincision and so on to p'fovide an overstitching or binding for the rawedge'of the incision.

30. A mechanism as specified in claim 29 in combination with means forincreasing the number of said ovestitches in the formation of an eyeletwhereby an even appearance of stitchinfr is effected thoughout.

Signed at New orln in the county of New York and State of N ew York,this 2nd day of March A. D. 1920.

ALBERTUS B. MATTNGLY.

